Winter Pool Maintenance with an EPN Pool Pillow

Keep the covered pool under control with a simple inspection routine based on visible changes, recorded measurements, and weather events.

Winter maintenance begins after the cover is secured. Check the setup after 24 hours, record the water level from one fixed point, observe the cover from four sides, and inspect again after heavy rain, strong wind, wet snow, or rapid thawing. Early attention helps prevent small changes from becoming difficult midwinter problems.

First full inspection after 24 hours
Observe the cover from at least 4 positions
Record water level from 1 fixed reference point
Recommended pillow inflation: about 70%
Made with 0.5 mm cold-resistant PVC
Stated material range: −25°C to 80°C
Available in 6 flat sizes
Flat areas range from 9 to 64 sq ft
Rope and reinforced grommets included
Cover pump or blower not included

Follow Four Maintenance Phases

Dividing winter care into clear stages makes it easier to know what needs attention and when. The checks performed during the first day are different from those needed after a storm or before spring opening.

Installation Follow-Up

The first 24 hours show how the cover, ropes, pillow, and water surface settle after installation. Check the raised area, perimeter fastening, water level, valve clearance, and any early collection of rainwater or debris before colder weather makes adjustment more difficult.

Closed-Season Monitoring

During the main winter period, focus on visible change rather than repeating the full closing checklist. Observe cover shape, standing water, snow distribution, pillow position, water level, rope condition, and fastening points after weather events and during longer stable periods.

Spring Preparation

Before opening, remove surface water and loose debris while the cover remains secured. Wait for ice to release naturally, prepare a clean drying area, and inspect the pillow, rope, cover, and fittings as each part becomes accessible.

Record a Clear Starting Condition

A written starting record makes later changes easier to judge. Complete the record after the cover is installed and before rain, snow, or freezing conditions alter the setup.

Record the Water Level

Measure the distance from the water surface to one permanent rail or wall reference.

Use the same point every time
Record the date and measurement
Note recent rain or drainage
Check nearby fittings for leaks
Avoid estimating from photographs alone

A fixed reference helps separate actual water loss from normal changes in cover shape.

Record the Cover Profile

Observe the covered pool from several directions.

Check the front and back
Check both side positions
Note the main raised area
Mark existing shallow low points
Record uneven perimeter overlap

Later inspections should compare the same viewpoints rather than relying on memory.

Record the Pillow Setup

Note the condition immediately after installation.

Record the selected pillow size
Confirm approximately 70% inflation
Note the rope attachment points
Check the valve orientation
Record the visible high-point position

These details help identify whether a later change involves air, movement, or surface loading.

Complete the First Follow-Up Check

The pillow, cover, ropes, and water surface may settle during the first day. A short follow-up can identify movement or uneven tension before winter weather adds water, snow, or frozen debris.

Compare the Raised Area

Walk around the pool and view the cover from the same four positions used in the starting record. A broad rise near the middle is expected. A sharp ridge, disappearing high point, or rise close to one wall deserves closer inspection.

Review Rope Tension

Compare opposing rope lines without pulling them immediately. One line should not appear much shorter or tighter than the others. Check the knots, grommet surroundings, and rope contact points for stretching, abrasion, twisting, or pressure against hard pool parts.

Check the Cover Edge

Inspect overlap, cables, clips, straps, anchors, and contact with the top rail. Look for one area becoming noticeably tighter, shorter, or more wrinkled. Small fastening corrections are easier before water or snow settles onto the cover.

Maintain a Regular Visual Routine

Major storms require immediate attention, but slow changes can also develop during calm periods. A brief scheduled inspection helps identify gradual air loss, rope wear, cover movement, or water-level changes.

Review the Same Viewpoints

Use the same four observation positions each time. Consistent viewing angles make it easier to notice whether the raised area has moved, one side has become lower, or a new fold has appeared near the cover perimeter.

Compare Written Measurements

Check the current water level against the recorded starting value. Also compare pillow shape, visible cover rise, and surface-water location. A dated record is more reliable than trying to remember conditions from several weeks earlier.

Inspect Accessible Components

Review cover fasteners, pump hoses, rope knots, drainage outlets, and nearby hardware without opening the cover. Look for wear, movement, freezing, loose components, or water being discharged back toward the pool base.

Inspect the Pool After Heavy Rain

Rain can deepen existing low areas within hours. The inspection should focus on water location, pump operation, discharge flow, and changes in the cover profile rather than only checking whether the pillow is still visible.

Locate the Deepest Water

Walk around the pool and compare the apparent water depth from several sides. The lowest point may have moved since the previous storm because cover tension, wind, debris, or pillow position changed the surface.

Check Pump Performance

Confirm that the inlet remains in the collection area and is not blocked by leaves, needles, ice, or folded cover material. A pump can appear to be operating while removing little water through a blocked or kinked route.

Review the Discharge Area

Follow the hose from the pump to the outlet. Water should move away from the pool base without crossing busy walkways, returning toward the wall, or collecting beside the bottom track and support blocks.

Inspect the Setup After Strong Wind

Wind may change the cover without leaving obvious damage. It can loosen one edge, rotate a rectangular pillow, alter rope tension, and collect dry leaves against the sheltered side of the pool.

Check Cover Overlap

Compare how far the cover extends beyond the rail at several locations. A section that appears shorter may have shifted during the wind, increasing tension around nearby cables, clips, straps, or anchors.

Check Pillow Alignment

Use the location of the raised area to judge movement beneath the cover. A high point near the perimeter or a diagonal ridge may indicate drifting, rotation, or unequal rope tension rather than loss of air.

Check Debris Distribution

Leaves, needles, and small twigs often collect on one side after wind. Remove accessible dry material before rainfall turns it into a heavier wet layer that can block drainage or deepen a low area.

Review Snow Before It Becomes Wet

Snow depth does not show the complete load. Fresh powder, compacted layers, wet snow, and refrozen slush can place very different amounts of weight on the same section of the cover.

Observe Snow Distribution

Check whether snow remains evenly spread or has drifted toward one side. A concentrated area near the perimeter may affect the cover differently from a similar depth distributed across the full pool surface.

Watch Density Changes

Snow becomes denser after sunlight, rain, warming, or repeated storms. A shallower layer of wet snow may weigh more than deeper dry powder, especially when it settles into an existing low section.

Follow Cover Instructions

Use only removal methods approved for the winter cover. Never step onto the covered pool or use sharp metal tools that could puncture the cover, liner, or pillow beneath the surface.

Prepare for Water During a Thaw

A rapid thaw can change snow or ice into a large volume of water within a short period. Pump position, drainage routes, and low areas should be checked before colder temperatures return.

Inspect as Melting Begins

Do not wait until all snow has become standing water. Early inspection shows whether meltwater is moving toward the pump, creating a new low area, or collecting around leaves and frozen cover folds.

Keep Drainage Open

Check pump screens, hoses, siphon lines, and outlets for slush, leaves, ice, or kinks. A partly blocked system may leave water on the cover until nighttime temperatures cause refreezing.

Recheck Before Nightfall

Review the surface again before temperatures fall. Water left around pumps, cords, hoses, debris, or folds may freeze into a more difficult shape and restrict equipment during the next maintenance visit.

Understand the Weight on the Cover

One gallon of water weighs approximately 8.34 lb. A pool pillow may reduce one deep basin, but water that remains on the cover still creates a significant load.

Water Volume	Approximate Weight	Maintenance Concern
10 gal	83 lb	Small local puddle
25 gal	209 lb	Broad shallow low area
50 gal	417 lb	Repeated rain or thaw
75 gal	626 lb	Deep unattended collection
100 gal	834 lb	Major surface-water load

Consider Where Water Sits

Fifty gallons concentrated near one side can affect the cover differently from fifty gallons spread across several shallow areas. Check both total buildup and its distance from the pool perimeter.

Include Debris and Ice

The table shows water weight only. Wet leaves, slush, soil, and refrozen ice add further load while making pumping and cleaning more difficult.

Remove Water Before It Deepens

Use equipment approved for the installed winter cover. Regular removal is easier than waiting until the collection area becomes deep, blocked by debris, or frozen into place.

Check the Pillow Without Opening the Cover

The visible cover rise provides clues about the pillow’s shape and position. Compare several signs before deciding that the chamber needs more air or has developed a leak.

Compare Cold and Mild Periods

A pillow may appear lower during cold weather because internal air contracts. Check whether the raised area returns during a warmer period before treating the change as permanent air loss.

Look for Continuing Deflation

A high point that remains flat during both cold and mild conditions may indicate a loose valve, puncture, open seam, or heavy surface load. Remove approved cover water before reaching a conclusion.

Avoid Automatic Reinflation

Adding air without identifying the cause may create excessive firmness when temperatures rise. Review the weather, surface load, valve history, and overall cover profile before making any adjustment.

Inspect the Positioning System

Rope and reinforced grommets help limit drifting, but both remain exposed to changing cover movement, moisture, freezing, and tension throughout winter.

Check Rope Balance

Compare opposing rope lines from outside the pool. One rope should not remain fully tight while the opposite line hangs loose. Uneven tension can pull the chamber toward one side or rotate a rectangular pillow.

Inspect Abrasion Points

Look where rope passes through grommets, around rails, and near anchor locations. Repeated movement against rough metal, sharp plastic, or frozen surfaces may gradually damage the rope or surrounding PVC.

Review Knots and Anchors

Confirm that knots remain secure and accessible. Check whether anchors, rails, or fastening points have moved. Avoid forcing frozen ropes or tightening lines while ice holds the system in place.

Check the Full Cover Edge

The pool pillow influences the center, while the perimeter fastening controls the cover around the wall. Maintenance should include the complete edge rather than only the raised middle.

Compare Cover Overlap

Observe how much material extends beyond the rail at several positions. A noticeably short section may indicate movement, uneven tension, or surface load pulling the cover toward another side.

Inspect Fastening Parts

Review cables, clips, straps, anchors, weights, and protective components according to the cover design. Look for loosening, breakage, corrosion, abrasion, or pressure against the top rail.

Watch Uneven Tightness

One tight edge paired with a loose opposite side may indicate shifted water, snow, debris, or cover alignment. Identify the load source before increasing tension around the perimeter.

Monitor Changes Below the Cover

Water level affects wall support, pillow height, and the distance between the cover and pool surface. A recorded measurement helps identify unexpected loss during winter.

Use One Reference Point

Always measure from the same permanent rail or wall location. Changing the reference position can create misleading differences because rails, ground, and water surfaces may not appear perfectly level.

Account for Weather

Rain entering the pool, drainage, evaporation, snowmelt, and pumping can affect the reading. Record recent weather and maintenance actions alongside each measurement for a more useful comparison.

Investigate a Continuing Drop

A steady decline may indicate leakage around the liner, skimmer, return fitting, plug, or another component. Do not assume every change is normal winter evaporation.

Keep Winter-Care Equipment Ready

Store the required tools where they can be reached without crossing an icy yard or searching for parts during a storm. Use only equipment suitable for the installed cover.

Prepare Inspection Tools

Keep the basic inspection items together.

Waterproof maintenance log
Permanent reference measurements
Flashlight for low-light checks
Phone or camera for comparison
Gloves with suitable winter grip

Consistent tools make each inspection easier to compare with the previous visit.

Prepare Water-Removal Equipment

Keep drainage equipment ready for changing weather.

Approved winter-cover pump
Clear discharge hose
Pump screen or intake guard
Outdoor-rated electrical protection
Suitable hose storage location

Inspect the equipment before a forecasted storm rather than after water has already accumulated.

Prepare Debris Tools

Use tools that will not damage the cover.

Soft-edged leaf net
Cover-safe brush
Smooth plastic scoop where approved
Storage hooks for wet tools
Clean tarp for spring removal

Avoid sharp metal rakes, ice picks, and tools with broken or rough edges.

Record Changes Throughout Winter

A maintenance log helps separate gradual change from a sudden problem. Each entry should use the same fields so several inspections can be compared without relying on memory.

Record Weather Conditions

Note the date, temperature range, recent rain, snow, wind, and thawing. Weather context explains why a pillow may feel softer, why the low area moved, or why new water appeared on the cover.

Record Visible Conditions

Note the raised-area position, cover profile, water location, snow distribution, rope tension, fastening condition, and water-level measurement. Short, consistent descriptions are easier to compare than long general notes.

Record Maintenance Actions

List any water removal, debris clearing, pump repositioning, hose adjustment, rope correction, or fastening work. Include the reason for each action and the result observed afterward.

Match Symptoms to the First Check

Visible changes may have several causes. Start with the simplest external checks before opening the cover, adding air, or making large rope adjustments.

What You Notice	Possible Cause	First Check
Raised area is lower on a cold morning	Normal air contraction	Recheck during warmer hours
High point moves toward one wall	Wind or rope imbalance	Compare opposing ropes
Pump runs but water remains	Blocked inlet or kinked hose	Inspect the full drainage route
One cover edge becomes tight	Uneven surface load	Check water, snow, and debris
Water level drops steadily	Liner or fitting leakage	Compare recorded measurements
Rectangular rise turns diagonal	Pillow rotation	Review side and end guidance
Grommet area looks stretched	Excessive rope tension	Reduce tension when safe
Cover remains flat after thawing	Air loss or heavy water load	Remove surface water first

Check External Causes First

Water, wet debris, snow, and changed cover tension may hide the normal pillow shape. Review the surface and perimeter before assuming the chamber has failed.

Use the Maintenance Record

Compare the current condition with earlier notes and photographs. A gradual decline over several checks suggests a different cause from a sudden change after wind or rain.

Make One Adjustment at a Time

Move the pump, clear the hose, rebalance a rope, or remove debris separately. One change at a time makes it easier to see which condition affected the result.

Know When Maintenance Is Not Enough

Routine maintenance covers water removal, debris clearing, observation, and minor accessible adjustments. Structural movement, major leakage, severe cover damage, or unsafe ice conditions require a different response.

Stop for Structural Movement

Do not tighten ropes or cover fasteners when a wall, rail, upright, or bottom track appears to move. Added tension may worsen an existing structural or ground-support problem.

Stop for Major Water Loss

A continuing water-level drop can reduce wall support and alter cover clearance. Investigate accessible fittings and seek appropriate assistance rather than repeatedly lowering or tightening the cover.

Stop in Unsafe Conditions

Do not work during lightning, severe wind, unstable ice, poor footing, or when access requires stepping onto the covered pool. Wait for safer conditions or arrange qualified help.

EPN Pool Pillow Maintenance FAQs

How Soon Should I Check the Pool After Closing?

Complete the first full inspection after approximately 24 hours. Check the raised area, rope tension, cover overlap, water level, fasteners, and any early standing water.

How Often Should I Inspect During Stable Weather?

Use a regular interval suited to the local winter and property access. Compare the same viewpoints, measurements, and components during every visit.

What Weather Should Trigger an Extra Check?

Inspect after heavy rain, strong wind, wet snow, freezing rain, rapid thawing, a hard freeze, or any event that visibly changes the cover.

Why Does the Pillow Look Softer in Cold Weather?

Air contracts as temperatures fall. Recheck the shape during warmer hours and review the cover load before assuming the pillow has lost air.

Should I Add Air During Winter?

Only after identifying continuing air loss and confirming safe access. Avoid adding air automatically during the coldest part of the day.

How Much Does 50 Gallons of Water Weigh?

Fifty gallons weigh approximately 417 lb before including wet leaves, slush, dirt, or ice in the same collection area.

Where Should the Cover Pump Be Placed?

Place it at the current low point. Recheck after wind, rain, snowmelt, or visible cover movement because the lowest area may change.

What Should Be Recorded in the Maintenance Log?

Record weather, cover shape, raised-area position, water level, rope condition, surface buildup, pump location, and any maintenance action completed.

Can I Pull a Frozen Rope?

Do not force rope held by ice or frozen moisture. Wait for safer conditions unless an urgent structural concern requires qualified assistance.

Should the Pillow Remain Exactly Centered?

Perfect alignment is unnecessary. The raised area should remain reasonably central and away from walls, rails, skimmers, returns, ladders, and hard fittings.

Is a Cover Pump Included?

No. The package includes the selected pillow, securing rope, and instructions. Water-removal equipment must be prepared separately.

What Is the Material Temperature Range?

The stated range for the 0.5 mm cold-resistant PVC is −25°C to 80°C. Maintenance and safe installation remain necessary within that range.

Maintain the Pool from Closing Day to Spring

Winter pool care is easier when every inspection follows the same order and the results are recorded. Look for changes rather than waiting for visible damage.

During the closed season:

Record the starting water level and cover profile
Complete the first full check after 24 hours
Observe the pool from the same four positions
Check after rain, wind, snow, and thawing
Remove standing water using approved equipment
Keep pump screens and hoses clear
Direct discharge away from the pool base
Remove accessible debris before it becomes saturated
Compare pillow shape during cold and mild periods
Inspect rope, grommets, knots, and anchor points
Review cover overlap and perimeter fastening
Record each maintenance action and result
Avoid forcing frozen ropes or cover folds
Stop when structural movement or major leakage appears
Remove surface water and debris before spring opening

EPN pool pillows use 0.5 mm cold-resistant PVC and are available in six flat sizes from 3 × 3 ft to 4 × 15 ft. Maintain the selected setup through regular observation, documented measurements, and weather-based checks.